Postulates of the Kinetic Molecular Theory

Which of the following postulates of kinetic molecular theory explains why a liter of gas is essentially a liter of empty space?

• The particles in a gas are considered to be small, hard spheres with insignificant volumes.

• The motion of the particles in a gas is rapid, constant, and random.

• The collisions between particles in a gas are perfectly elastic.

• Equal volumes of gases at the same temperatures and pressure contain equal numbers of moles

Which of the following is explained by kinetic molecular theory?

• smaller particles have more surface area than larger particles

• water boils at 100C

• Propane releases energy stored in its bonds when it reacts with oxygen

• an aerosol can is cold when sprayed out

Tags

NGSS.HS-PS3-2

Which of these is a postulate of kinetic molecular theory?

• Molecules of gases have a finite volume

• Molecules of gases attract and repel one another.

• Collisions between gas molecules are inelastic

• The kinetic energy of gas molecules depends on temperature.

Tags

NGSS.HS-PS3-2

NGSS.HS-PS3-4

Which of the following is one of the assumptions of kinetic molecular theory?

• collisions between gas particles and the wall of a container are inelastic

• the temperature of the gas depends on the average potential energy of the gas particles

• gas particles are much larger than the space between them

• the volume of a gas is mostly empty space

According to kinetic molecular theory:

• The particles in a gas are considered to be small, hard spheres with insignificant volumes.

• The particles in a gas are considered to be small, hard spheres with significant volumes.

According to kinetic molecular theory:

• The motion of the particles in a gas is rapid, constant, and random.

• The motion of the particles in a gas is slow, periodic, and consistent.

According to kinetic molecular theory:

• The collisions between particles in a gas are perfectly inelastic.

• The collisions between particles in a gas are perfectly elastic.

According to kinetic molecular theory:

• There is attraction or repelling between particles

• There is not attraction or repelling between particles

According to kinetic molecular theory:

• the average kinetic energy of the particles in a gas depends on the absolute temperature of the gas.

• the average potential energy of the particles in a gas depends on the absolute temperature of the gas.

The postulates of kinetic molecular theory are based on ....

• an ideal gas

• a real gas